@inproceedings{nkd06a,
    author = {Nienhaus, Marc and Kirsch, Florian and Döllner, Jürgen},
    booktitle = {IV},
    title = {Sketchy Illustrations for Presenting the Design of Interactive CSG},
    year = {2006},
    pages = {772--777},
    publisher = {IEEE Computer Society Press},
}